Need a keyed lock

A handy person from Denver, CO says:
August 26, 2020
First: given the photos shown can I use the 82-081 to replace my existing handle set so that I can have a keyed lock?

Second: is this all I need or are there other parts I need to purchase? I don?t know what ?Mortise lock and striker sold separately? means.

Thank you for your help and expertise,
Dakini
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Bob from SWISCO responded:
August 31, 2020

Hey Dakini. The mortise lock is the door's internal lock--in your case, probably our 82-269. If it's functioning just fine there's no need to replace it, and you should indeed be able to use the 82-081 Keyed Handle Set as a new handle set. 
A handy person from Denver, CO says:
August 31, 2020
Awesome, thank you. I will try just replacing the handle set with the 82-081.
Keyed Mortise Style Handle Set, 4-15/16"
Keyed Mortise Style Handle Set, 4-15/16"
82-081
$62.05
Roto Single Point Mortise Lock
Roto Single Point Mortise Lock
82-269
$20.12
Mounting Plate
Mounting Plate
82-108
$7.97
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